Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | DC 3.3V to 5V |
| Output Type | Digital TTL Level |
| Sensor Mechanism | Slot-Type Optocoupler |
| PCB Size | 35mm x 15mm x 5mm |
| Mounting Hole | 3mm Diameter |
| Response Time | < 50 Microseconds |
| Working Temperature | -25°C to 85°C |
| Current Consumption | 15mA (Typical) |
| Slot Width | 5mm Gap |
| Connector Type | 3-Pin PH2.0 Pitch |
Anonymous
Mar 30, 2026
Rating: 5/5
Great for RPM projects
Used this to measure fan speed on a custom cooling rig. The signal is clean and easy to read with an Arduino. Highly recommend for hobbyists.
Anonymous
Mar 14, 2026
Rating: 5/5
Easy to integrate
Connected to ESP32 without any voltage issues. The slot width is perfect for standard encoder disks. Very stable readings.
Anonymous
Mar 04, 2026
Rating: 4/5
Solid sensor
Works as expected for counting rotations. The LED indicator is bright which helps with debugging. Only wish the cable was slightly longer.
Anonymous
Feb 13, 2026
Rating: 3/5
Needs precise alignment
Had trouble initially getting consistent counts. Once I aligned the motor shaft perfectly through the slot, it worked fine. Sensitivity is high.
Anonymous
Jan 31, 2026
Rating: 5/5
Excellent value
Bought five for testing multiple motors in parallel. All units performed identically. Great price point for bulk electronics work.
Q: Is this compatible with 3.3V Raspberry Pi GPIO?
A: Yes, the module operates at 3.3V to 5V, making it safe for direct connection to Raspberry Pi GPIO pins.
Q: Can it handle motor speeds up to 10000 RPM?
A: Yes, provided the interrupter disk has a single slot. The frequency response supports high-speed detection within reasonable limits.
Q: Which wire color corresponds to VCC?
A: Typically, the red wire is VCC, black is GND, and white or yellow is the Signal output. Please check the PCB silkscreen to confirm.
Q: Is a slotted disk included in the package?
A: No, this package includes only the sensor module. You will need to provide your own interrupter disk or flag.
Q: Does the output pin have an internal pull-up resistor?
A: No, the output is open-collector. We recommend using an external pull-up resistor for stable logic levels.
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